Se cita una nueva localidad para Liophis saggitifer. La distribucion geografica de esta especie en Patagonia es aun poco conocida, con este registro su distribucion se extiende considerablemente representando el registro mas austral de la especie.Fil: Avila, Luciano Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentin

Avila, Luciano Javier

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Check List 5(3): 712–713, 2009. ISSN: 1809-127X  NOTES ON GEOGRAPHIC DISTRIBUTION    712Reptilia, Squamata, Colubridae, Liophis sagittifer sagittifer: Distribution extension  Luciano Javier Avila  Centro Nacional Patagonico – Consejo Nacional de Investigaciones Cientificas y Tecnicas (CENPAT-CONICET). Boulevard Almirante Brown 2825, U9120ACF. Puerto Madryn, Argentina. E-mail: avila@cenpat.edu.ar   Liophis sagittifer sagittifer (Jan 1863) is a medium-sized colubrid snake (maximum SVL ~1020 mm) distributed in Argentina, Paraguay, and Bolivia (Dixon and Thomas 1982; Giraudo and Scrocchi 2002). Is a diurnal terrestrial snake found in Patagonica, Monte and Pampeana phytogeographic provinces that intergrades with Liophis sagittifer modestus in Espinal and Chaqueña provinces (Giraudo and Scrocchi 2002). Southernmost record of this species is by Koslowsky (1896), who mention the existence  of specimens in Chubut but without any  specific locality. Later, Dixon and Thomas (1982) indicates five records of L. sagittifer sagittifer south of province of La Pampa, in central Argentina but all from bibliographic sources. These authors marked a point near the boundaries of provinces of Rio Negro and Chubut at approximately 42° S latitude. According to  Cei (1986) the southern distribution limit is peninsula de Valdes, in northeastern Chubut. In a recent field guide (Scolaro 2005) the general geographic distribution marked is north of Chubut river.    Figure 1: Red dot: new locality for Liophis sagittifer sagittifer in Argentina. Green dotted circle: peninsula de Valdes. Red dotted circle: Approximate location of the locality cited by Dixon and Thomas (1982). Ruta Nacional 3, Uzcudun Post, and main cities in the region are marked as reference. Check List 5(3): 712–713, 2009. ISSN: 1809-127X  NOTES ON GEOGRAPHIC DISTRIBUTION    713We present herein a new record for this species  in the province of Chubut (Figure 1), based on  a specimen collected alive by J. Pardiñas and  U. Pardiñas during a mastozoological field survey carried out on 27 October 2007 near Chico  river, on southeast edge, 40 km west of Uzcudun Post by a dirty road (44°05' S, 66°42' W, datum WGS 84), department of Florentino Ameghino. The specimen (Figure 2) was found active  near the main stream in a Monte-Patagonian steppe ecotonal area. Distance from peninsula  de Valdes is more than 200 km airline, representing the southernmost vouchered record for this species and extending its distribution  to central-east province of Chubut. The voucher was deposited in the herpetological collection  of the Museo Argentino de Ciencias Naturales Bernardino Rivadavia, Ciudad Autonoma de Buenos Aires, Argentina, under number MACN 39041.    Figure 2: Liophis sagittifer sagittifer from 40 km west of Uzcudun post, near rio Chico, department of Florentino Ameghino, province of Chubut, central Patagonia, Argentina. Photo by C. H. F. Perez.  ————————————————  Acknowledgments I thank U. and J. Pardiñas for the specimen and C. H. F. Perez for the photograph. M. Morando kindly review the first draft.   ————————————————  Literature cited Cei, J. M. 1986. Reptiles del Centro-Oeste y Sur de la Argentina. Herpetofauna de las zonas aridas y semiaridas. Museo Regionale di Scienze Naturali Torino. Monografie IV: 1-427 Dixon J. R. and R. A. Thomas. 1982. The status of the argentine colubrid snakes Liophis sagittifer and  L. trifasciatus. Herpetologica 38:389-395. Koslowsky, J. 1896. Sobre algunos reptiles de Patagonia y otras regiones argentinas. Revista del Museo de La Plata 7: 447-457. Scolaro, J. A. 2005. Reptiles Patagonicos. Sur. Una guia de campo. Trelew: Universidad Nacional de  la Patagonia San Juan Bosco. 80 p. Giraudo, A. R. and G. J. Scrocchi. 2002. Argentinian snakes. An annotated checklist. Smithsonian herpetological information service 132: 1-53.  Received November 2008 Accepted September 2009 Published online September 2009 

Reptilia, Squamata, Colubridae, Liophis sagittifer sagittifer: distribution extension

Luciano Javier Avila

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Reptilia, Squamata, Colubridae, Liophis sagittifer sagittifer : distribution extension

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Reptilia, Squamata, Colubridae, Liophis sagittifer sagittifer : distribution extension

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